Conductor heating originates from many sources. Match each description to the appropriate heating term.

Environment or ambient air temperature which may vary along the conductor's length or may vary during the time of day.

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Heat generated by current flowing through adjacent load$-$carrying conductors, which adds to the ambient heat and impedes the heat dissipation process within the conduit or cable assembly.

Heat generated by the load current flowing in the metal conductor material due to the natural resistance of the conductor.

Retained heat due to the inability of the surrounding media to dissipate heat.

Area Heat